class.ilRTE.php

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<?php
 /*
   +----------------------------------------------------------------------------+
   | ILIAS open source                                                          |
   +----------------------------------------------------------------------------+
   | Copyright (c) 1998-2001 ILIAS open source, University of Cologne           |
   |                                                                            |
   | This program is free software; you can redistribute it and/or              |
   | modify it under the terms of the GNU General Public License                |
   | as published by the Free Software Foundation; either version 2             |
   | of the License, or (at your option) any later version.                     |
   |                                                                            |
   | This program is distributed in the hope that it will be useful,            |
   | but WITHOUT ANY WARRANTY; without even the implied warranty of             |
   | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              |
   | GNU General Public License for more details.                               |
   |                                                                            |
   | You should have received a copy of the GNU General Public License          |
   | along with this program; if not, write to the Free Software                |
   | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
   +----------------------------------------------------------------------------+
*/

class ilRTE
{
        const ILIAS_IMG_MANAGER_PLUGIN = 'ilias_image_manager_plugin';
        
        var $plugins;
        var $buttons;
        var $tpl;
        var $ctrl;
        var $lng;       
        
        function ilRTE($a_version = "")
        {
                global $tpl, $ilCtrl, $lng;
                $this->tpl =& $tpl;
                $this->ctrl =& $ilCtrl;
                $this->lng =& $lng;
                $this->plugins = array();
                $this->buttons = array();
        }
        
        function addPlugin($a_plugin_name)
        {
                array_push($this->plugins, $a_plugin_name);
        }
        
        function addButton($a_button_name)
        {
                array_push($this->buttons, $a_button_name);
        }
        
        function removePlugin($a_plugin_name)
        {
                $key = array_search($a_plugin_name, $this->plugins);
                if ($key !== FALSE)
                {
                        unset($this->plugins[$key]);
                }
        }
        
        function removeButton($a_button_name)
        {
                $key = array_search($a_button_name, $this->buttons);
                if ($key !== FALSE)
                {
                        unset($this->buttons[$key]);
                }
        }
        
        function addRTESupport()
        {
                // must be overwritten in parent classes
        }
        
        function addUserTextEditor($editor_selector)
        {
                // must be overwritten in parent classes
        }

        function addCustomRTESupport($obj_id, $obj_type, $tags)
        {
                // must be overwritten in parent classes
        }
        
        
        public static function _getRTEClassname()
        {
                include_once "./Services/AdvancedEditing/classes/class.ilObjAdvancedEditing.php";
                $editor = ilObjAdvancedEditing::_getRichTextEditor();
                switch ($editor)
                {
                        case "tinymce":
                                return "ilTinyMCE";
                                break;
                        default:
                                return "ilRTE";
                                break;
                }
        }

        function _cleanupMediaObjectUsage($a_text, $a_usage_type, $a_usage_id)
        {
                // get current stored mobs
                include_once("./Services/MediaObjects/classes/class.ilObjMediaObject.php");
                $mobs = ilObjMediaObject::_getMobsOfObject($a_usage_type,
                        $a_usage_id);
                while (eregi("data\/".CLIENT_ID."\/mobs\/mm_([0-9]+)", $a_text, $found))
                {
                        $a_text = str_replace($found[0], "", $a_text);
                        if (!in_array($found[1], $mobs))
                        {
                                // save usage if missing
                                ilObjMediaObject::_saveUsage($found[1], $a_usage_type,
                                        $a_usage_id);
                        }
                        else
                        {
                                // if already saved everything ok -> take mob out of mobs array
                                unset($mobs[$found[1]]);
                        }
                }
                // remaining usages are not in text anymore -> delete them
                // and media objects (note: delete method of ilObjMediaObject
                // checks whether object is used in another context; if yes,
                // the object is not deleted!)
                foreach($mobs as $mob)
                {
                        ilObjMediaObject::_removeUsage($mob, $a_usage_type,
                                $a_usage_id);
                        $mob_obj =& new ilObjMediaObject($mob);
                        $mob_obj->delete();
                }
        }
        
        public static function _replaceMediaObjectImageSrc($a_text, $a_direction = 0)
        {
                if (!strlen($a_text)) return "";
                switch ($a_direction)
                {
                        case 0:
                                $a_text = preg_replace("/src\=\"(.*?\/mobs\/mm_([0-9]+)\/.*?)\"/", "src=\"il_" . IL_INST_ID . "_mob_" . "\\2" . "\"", $a_text);
                                break;
                        default:
                                include_once("./Services/MediaObjects/classes/class.ilObjMediaObject.php");
                                $resulttext = $a_text;
                                if (preg_match_all("/src\=\"il_([0-9]+)_mob_([0-9]+)\"/", $a_text, $matches))
                                {
                                        foreach ($matches[2] as $idx => $mob)
                                        {
                                                if (ilObjMediaObject::_exists($mob))
                                                {
                                                        $mob_obj =& new ilObjMediaObject($mob);
                                                        $replace = "il_" . $matches[1][$idx] . "_mob_" . $mob;
                                                        $resulttext = str_replace("src=\"$replace\"", "src=\"" . ILIAS_HTTP_PATH . "/data/" . CLIENT_ID . "/mobs/mm_" . $mob . "/" . $mob_obj->getTitle() . "\"", $resulttext);
                                                }
                                        }
                                }
                                $a_text = $resulttext;
                                break;
                }
                return $a_text;
        }
        
        public static function _getMediaObjects($a_text, $a_direction = 0)
        {
                if (!strlen($a_text)) return array();
                include_once("./Services/MediaObjects/classes/class.ilObjMediaObject.php");
                
                $mediaObjects = array();
                switch ($a_direction)
                {
                        case 0:
                                if(preg_match_all("/src\=\"(.*?\/mobs\/mm_([0-9]+)\/.*?)\"/", $a_text, $matches))
                                {
                                        foreach ($matches[2] as $idx => $mob)
                                        {
                                                if (ilObjMediaObject::_exists($mob) && !in_array($mob, $mediaObjects))
                                                {
                                                        $mediaObjects[] = $mob;
                                                }
                                        }
                                }
                                break;
                        default:
                                
                                if(preg_match_all("/src\=\"il_([0-9]+)_mob_([0-9]+)\"/", $a_text, $matches))
                                {
                                        foreach ($matches[2] as $idx => $mob)
                                        {
                                                if (ilObjMediaObject::_exists($mob) && !in_array($mob, $mediaObjects))
                                                {
                                                        $mediaObjects[] = $mob;
                                                }
                                        }
                                }
                                break;
                }
                return $mediaObjects;
        }
        
        public function setRTERootBlockElement()
        {
                // must be overwritten in sub classes
        }
        
        public function getRTERootBlockElement()
        {
                // must be overwritten in sub classes
        }
        
        public function disableButtons()
        {
                // must be overwritten in sub classes
        }
        
        public function getDisabledButtons()
        {
                // must be overwritten in sub classes
        }
}

?>